Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K6CS callsign genealogy
Currently held by SWIM, CHARLES H
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K6CS's current licensee, walking backwards.
- SWIM, CHARLES HCAgranted 2004-11-02cancelled 2012-08-31
Successor callsigns
Callsigns held now by people who previously held K6CS.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign K6CS, oldest first.
- SABELBERG, CHARLES S CA2000-05-31 → cancelled 2012-08-14
- SWIM, CHARLES H CA2022-11-16 active